Welcome to Bloom

A gentle, private space to understand your cycle. Everything stays on your device — nothing is ever sent anywhere.

100% Private · Local Only

A little about you

This helps personalize your insights.

Your last period

When did your most recent period start? This anchors your calendar.

Basal temperature

Tracking waking temperature reveals ovulation. Do you have any readings to add now?

Bloom

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Next period

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Ovulation

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Fertile window

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Avg cycle

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Log today

Symptoms:
Mood:

Period Predicted period Ovulation Fertile window Today
SunMonTueWedThuFriSat

Basal Temperature

Your waking temperature reveals ovulation. A sustained rise of ~0.4°F+ confirms it.

Cycle Insights

Health context

Based on your profile and history. This is informational, not medical advice.

Cycle history

Your profile

Privacy & your data

Your data never leaves this device. Bloom stores everything locally in your browser. No accounts, no servers, no tracking.

Back up regularly — clearing browser data will erase your history.